Asled starts from rest, and slides down a 38.0° fricionless hill for 4.24s. how fast is it going at the end?

The Sled goes fast at 25.60 m/s

Explanation:

According to fundamentals, velocity of any body is equal to the product of its acceleration and time period that is,

velocity = acceleration x time ;

According to question a sled starts from rest and slides down a  hill and the time taken to happen so is 4.24s  

we have, acceleration =

therefore acceleration = 9.81

                           = 6.039  for the case under consideration;

hence the velocity may be obtained as v=6.039x4.24 = 25.60 m/s

moving ball hits still ball. mover stops, hit ball moves. momentum transfer.

answer: good job it's all correct !

explanation: